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65 POINTS!

Solve the system of equations using subtraction.
{y=x+4
{y=2x+4

Answer: 5^6

Step-by-step explanation:

Since the expression has parenthesis, it means to multiply. When you multiply the powers, you get it in the form 5^n.

Answer:

-$20,000

Step-by-step explanation:

30% of $25,000 is $7,500 Therefore..

$7,500 x 6 = $45,000 ( 6 being the years )

$45,000 - $25,000 = $20,000

Hope this helps.

-Conrad

Answer: Wait so the sides are both 25 squares?

Step-by-step explanation:

Answer:

  x = 0

Step-by-step explanation:

  2(x-3)+9=3(x+1)+x . . . . given equation

  2x -6 +9 = 3x +3 +x . . . . eliminate parentheses

  2x +3 = 4x +3 . . . . . . . . collect terms

  0 = 2x . . . . . . . . . . . . . . subtract (2x +3)

  x = 0 . . . . . . . . . . . . divide by 2

Answer:

[tex]x = 0[/tex]

Third answer is correct.

Step-by-step explanation:

[tex]2(x - 3) + 9 = 3(x + 1) + x \\ 2x - 6 + 9 = 3x + 3 + x \\ 2x - 3x - x = 6 - 9 + 3 \\ - 2x = 0 \\ \frac{ - 2x}{2} = \frac{0}{2} \\ x = 0[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

8 < x < 34

Step-by-step explanation:

ab = 13, ac = 21, bc = x

The longest side of a triangle must be less than the sum of the other two sides.

If 21 is the longest side:

21 < 13 + x

8 < x

If x is the longest side:

x < 13 + 21

x < 34

Therefore, 8 < x < 34.

Answer:

Joseph- 265 coins

molly- 275 coins

Answer:

25 meters

Step-by-step explanation:

in this case they give us the information about the lake and that length corresponds to the perimeter.

the perimeter of a circle has the following formula:

p = 2 * pi * r

then r equals:

r = p / pi * 2

replacing we have:

r = 157 / (2 * 3.14)

r = 25

which means that the radius of the lake is 25 meters

Answer:

Hey it’s C

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

Length of hypotenuse = √( a² + b²)

Step-by-step explanation:

The question is incomplete and unclear. From the question, it is clear we are to determine the hypotenuse of the triangle. Hence the triangle is a right angled triangle.

Find attached the diagram used in solving the question.

From the diagram,

a = opposite

b = adjacent

c = hypotenuse

To find the hypotenuse of a right angled triangle, we apply Pythagoras theorem.

Using Pythagoras theorem

Hypotenuse² = opposite ² + adjacent²

Insert the values of each, we have:

c² = a² + b²

Then we find the Square root both sides

c = √( a² + b²)

So we can insert the values of a and b if we are given.

For instance, if b = 6

c = √( a² + 6²)

Using the diagram,

Hypotenuse: c = √( a² + b²)

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

The urban planner collects travel times from a random sample of 125 commuters in the San Francisco Bay Area. A traffic Study from last year claimed that the average commute time in the San Francisco Bay Area is 45 min. The urban planner will see if there is evidence the average commute time is greater than 45 minutes

( Here in this case, Null hypothesis will be Η :μ = 45

And the Alternate Hypoyhesis will be   H, :μ> 45 )

C. The urban planner asks a random Sample of 100 commuters in the San Francisco Bay Area to record travel times on a Tuesday morning. One year later, the urban planner asks the same 100 commuters to record travel times on a tuesday morning . The urban planner will see the difference in commute time shows an increase.

Here in this case the null hypothesis will be, H₀ : [tex]\mu _d[/tex] = 0

And the Alternate Hypothesis will be   H, : [tex]\mu _d[/tex] <0 The commute time after 1 year is more

Answer:

Step-by-step explanation:

The required hypothesis test is that for a single population mean. It wouldn't involve population proportion or difference between two population means. The correct answer choice would be

A traffic study from last year claimed that the average commute time in the San Francisco Bay Area is 45 minutes. The urban planner will see if there is evidence the average commute time is greater than 45 minutes.

Answer

Your answer is C.

C. side CE

Answer:

C

Step-by-step explanation:

Answer:

48

Step-by-step explanation:

In similar polygons, every side of one polygon is a certain number of times bigger than the corresponding side of the other polygon. This number is the scale factor. Since the perimeter of each polygon is the sum of the lengths of the sides of that polygon, the perimeters also have the same scale factor that the sides do.

For example, if a triangle has 3 sides measuring 5 cm each and a similar triangle has 3 sides measuring 10 cm each, you see that each side of the second triangle is 2 times the length of the corresponding side of the first triangle. The scale factor from the smaller triangle to the larger triangle is 2. Now look at the perimeters. Since 5 + 5 + 5 = 15 and 10 + 10 + 10 = 30, the perimeters are 15 cm and 30 cm, and again, the perimeter of the second triangle is the same 2 times bigger than the perimeter of the first triangle.

Now look at your problem.

The perimeter of the smaller flag to the right is 16.

We see a side on the larger flag is 15, but we don't see the same side length on the smaller flag, so 15 does not help us.

Now we see that a side of the smaller flag measures 4 and the corresponding side of the larger flag measures 12. We divide the larger side length by the corresponding smaller side length to find the scale factor.

12/4 = 3

The scale factor from the smaller flag to the larger flag is 3. The perimeters also have the same scale factor of 3.

perimeter = 3 * 16 = 48

Answer: 48

Answer:

48

Step-by-step explanation:

Similar polygons have their sides in proportion, and we call the proportion between pairs of corresponding sides on two similar polygons the scale factor between them. We want to find the perimeter of the larger flag given the smaller one, and comparing the side with length 12 on the larger one with the side of length 4 on the smaller, we get a scale factor of 12 / 4 = 3.

This tells us that all the lengths on the larger flag are 3 times longer than the corresponding lengths on the smaller flag. What happens to the perimeter when we scale all of the lengths? Well, if every side gets multiplied by three, the sum of those sides will naturally be multiplied by 3, too.

Our large flag has a perimeter 3 times bigger than the smaller one, then, and 3 × 16 = 48.

Answer:

(A) (-6,-2)

Step-by-step explanation:

Answer:

(-6, -2)

Step-by-step explanation:

Look at the attached picture

Hope it will help you....

Good luck on your assignment

Answer:

90

Step-by-step explanation:

I took the test and 90 gives u the most variability in your outcome so ur answer is more reliable.

Answer:

the person above me is right its 90

Step-by-step explanation:

i did the unit test

Look at the attached picture

Hope it will help you...

Good luck on your assignment

Answer:

This is so you can give the person above me brainly

Step-by-step explanation:

Answer:

U

Step-by-step explanation:

9514 1404 393

Answer:

  C)  rotation, then translation

Step-by-step explanation:

Figure 2 is rotated 90° CCW about the origin from figure 1.

Figure 3 is translated 6 units to the right from figure 2.

The transformation is ...

  rotation, then translation

Answer:

As many as he thinks is enough

Step-by-step explanation:

1. There is no specific wag to answer this it has no answer choices or any type of math hint of how many cherries he wants.

Answer:

Graph B

Step-by-step explanation:

Linear functions are straight lines.

Linear functions are straight lines. Graph B has a straight line which means it is a linear function.

A function is defined as a relation between the set of inputs having exactly one output each.

Linear functions are straight lines.

In the given option Graph A has the curve graph which can't be a linear function.

Graph B has a straight line which means it is a linear function.

Graph C the lines are not straight so it can't be a linear function.

Similarly, in Graph D, it can't be a linear function.

Learn more about function here;

https://brainly.com/question/20106471

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Answer:

A

Step-by-step explanation:

pls mark me brainliest

Answer:

I think it is e

Step-by-step explanation:

Hope this is correct and hope this helps

Answer:

  5

Step-by-step explanation:

The total cost per day is $20 +50 = $70. Then the number of days that expenditure can be made on a budget of $350 is ...

  $350/($70/day) = 5 days

Answer:

Step-by-step explanation:

let number of days =x

(20+50)x≤350

70 x≤350

x≤350/70

or x≤5

He can rent both at the most 5 days.

Answer:

One blue square equals 4.2 grams

Step-by-step explanation:

If the triangle is equal to three of the blue squares then you would have to divide the triangles value by three to get the squares value.

12.6/3 = 4.2

Answer:

dont braly me do it for him

Step-by-step explanation:

Answer:

There is not enough evidence to support the claim that the liquid diet yields a higher mean weight loss than the powder diet (P-value = 0.15).

Step-by-step explanation:

This is a hypothesis test for the difference between populations means.

The claim is that the liquid diet yields a higher mean weight loss than the powder diet.

Then, the null and alternative hypothesis are:

[tex]H_0: \mu_1-\mu_2=0\\\\H_a:\mu_1-\mu_2< 0[/tex]

The significance level is 0.05.

The sample 1 (powder diet group), of size n1=49 has a mean of 42 and a standard deviation of 12.

The sample 2 (liquid diet group), of size n2=36 has a mean of 45 and a standard deviation of 14.

The difference between sample means is Md=-3.

[tex]M_d=M_1-M_2=42-45=-3[/tex]

The estimated standard error of the difference between means is computed using the formula:

[tex]s_{M_d}=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}=\sqrt{\dfrac{12^2}{49}+\dfrac{14^2}{36}}\\\\\\s_{M_d}=\sqrt{2.939+5.444}=\sqrt{8.383}=2.895[/tex]

Then, we can calculate the t-statistic as:

[tex]t=\dfrac{M_d-(\mu_1-\mu_2)}{s_{M_d}}=\dfrac{-3-0}{2.895}=\dfrac{-3}{2.895}=-1.04[/tex]

The degrees of freedom for this test are:

[tex]df=n_1+n_2-1=49+36-2=83[/tex]

This test is a left-tailed test, with 83 degrees of freedom and t=-1.04, so the P-value for this test is calculated as (using a t-table):

[tex]\text{P-value}=P(t<-1.04)=0.15[/tex]

As the P-value (0.15) is greater than the significance level (0.05), the effect is not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the liquid diet yields a higher mean weight loss than the powder diet.

Answer:

13.31 and - 3.31

Step-by-step explanation:

(x + y)^2 = x^2 + y^2 + 2xy ; x + y = 10; x^2 + y^2 = 56

This means ;

10^2 = 56 + xy;

100-56 = XY

44 = xy---------(3)

From x + y = 10

x = 10- y

Substitute that in eqn 3;

We have: 44 = (10-y) y

44 =10y - y^2

Y^2-10y -44 = 0;

From formula method of quadratic equation;

Y =[ - (-10) +_ √ (-10)^2 + 4 × 1 x (-44)] / 2 × 1

y = [ 10 +_√ (100 + 176) ]/ 2]

y = [ 10 +_ √ 276]/ 2

y = [ 10 + √ 276]/ 2 or [ 10 _ √ 276]/ 2

y = 13.31 or - 3.31

Similarly x = 10 - 13.31 or 10 - (-3.31)

x = - 3.31 or 13.31

The required ordered pairs are (5+√3, 5-√3) and  (5-√3, 5+√3).

Given equations are:

[tex]x+y=10[/tex]......(1)

[tex]x^{2} +y^{2} =56[/tex].......(2)

An equation is a statement that equates to two statements.

On squaring equation (1) we get

[tex]x^{2} +y^{2} +2xy=100[/tex]

From equation(2) [tex]x^{2} +y^{2} =56[/tex]

So, [tex]2xy=44[/tex]

[tex]xy=22[/tex]

[tex]y=\frac{22}{x}[/tex]

Put [tex]y=\frac{22}{x}[/tex] in equation (1)

We get [tex]x+\frac{22}{x} =10[/tex]

[tex]x^{2} -10x+22=0[/tex]

[tex]x=5+\sqrt{3}[/tex]

[tex]x=5-\sqrt{3}[/tex]

If  [tex]x=5+\sqrt{3}[/tex],

[tex]y=10-x[/tex]

[tex]y=5-\sqrt{3}[/tex]

So the ordered pair is [tex](5+\sqrt{3}, 5-\sqrt{3} )[/tex]

If  [tex]x=5-\sqrt{3}[/tex],

[tex]y=10-x[/tex]

[tex]y=5+\sqrt{3}[/tex]

So the ordered pair is [tex](5-\sqrt{3}, 5+\sqrt{3} )[/tex]

Hence, the required ordered pairs are [tex](5+\sqrt{3}, 5-\sqrt{3} )[/tex] and [tex](5-\sqrt{3}, 5+\sqrt{3} )[/tex].

To get more about equations visit:

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Answer:

Both expressions have different base.

Step-by-step explanation:

Product rule can only be use for the similar bases. For example 2² × 2⁴ have the same base.

For this question, 3⁴ × 2⁸ have different bases which is 3 and 2.

Answer:

0.25 L at 0.1% and 0.75 L at 0.22%

Step-by-step explanation:

We have to:

         percent                                 quantity

  Salt solution # 1 0.1                            x L

 Salt solution # 2 0.22                     (1 - x) L

    Mixture 0.19%                                    1

We are left with the following equation:

0.1 * x + 0.22 * (1-x) = 0.19 * 1

solving:

0.1 * x + 0.22-0.22 * x = 0.19

0.1 * x- 0.22 * x = 0.19 - 0.22

-0.12 * x = -0.03

x = -0.03 / -0.12

x = 0.25

Which means

Salt solution # 1 0.1% 0.25 L should be used and for salt solution # 2 0.22% 0-75 (1 - 0.25) L